Heavy-duty curb ramps have good shock absorption compression resistance and low noise. Protect your vehicle from vibration and reduce the noise when you drive in or out of the curb The threshold ramp with non-slip groove surface can effectively increase friction suitable for front doors back doors patio doors and office doors very friendly to pedestrians and vehicles The curb ramp is easy to carry and transport can be placed in the trunk detachable will not damage the car tires can be spliced any combination of length convenient combination Arch bridge design passing obstacles is as easy as flat ground. The base has a grid structure which gives the ramp uniform force high load-bearing capacity and stability Size: 40x70 cm/15.7x27.5 inch inner groove size: 12x8 cm/4.7x3.1inch